CVE-2026-95521 Rpm: rpm: shell command injection via macro expansion of source/spec file basenames when installing a source rpm
Attackers can execute arbitrary shell commands by installing a malicious source RPM, affecting users of Red Hat Enterprise Linux and related distributions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-95521?
CVE-2026-95521 is a high-severity command injection vulnerability in Red Hat Enterprise Linux 10, published on 24 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A command injection flaw was found in rpm. Installing or rebuilding a source RPM whose source or spec file basenames contain a %() macro construct causes rpm to execute an attacker-controlled shell command via popen() while relocating the source file list. This allows arbitrary command execution as the invoking (typically non-root) user, simply by installing, rebuilding, or otherwise processing an untrusted .src.rpm.
Weakness: CWE-78
Which versions are affected by CVE-2026-95521?
How do I fix CVE-2026-95521?
Apply the vendor's patch.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-95521 being exploited?
There is no known exploitation of CVE-2026-95521 in the wild and no public exploit code.
Sources
Also known as AZL-105326, DEBIAN-CVE-2026-95521, ECHO-1ff4-ea0c-39f6, GHSA-7prr-g333-3h48, UBUNTU-CVE-2026-95521.